Prem Pais (IMAGE) McMaster University Caption Prem Pais is co-principal investigator of the TIPS-3 study, and adjunct professor of medicine at the St. John's Research Institute of Bangalore, India. Credit Population Health Research Institute Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.